In: Math
Simplify the complex numbers in term of i.
z= (1+3i)/(1-4i)
Multiply numerator and denominator by the complex conjugate of the denominator (1+4i).
(1+3i)/(1-4i) ×(1+4i)/(1+4i)
=[ (1+3i)×(1+4i)] /[(1)^2-(4i)^2]
=(1+7i+12i^2)/(1-16i^2)
Take. i^2=-1
= (1+7i+12(-1))/(1-16(-1))
=(7i-11)/17
Or z= 7i/17-11/17
After simplify we will get
z=7/17i-11/17